Grinding-machine.



A. L. BAUSMAN. GRINDING MACHINE. APPLICATION F'ILED JULY 21,1910.

1979 11 5 Patented N0v.25, 1913.

3 SHEETS-SHEET 1.

WITNESSES:

A MW; W 1% I V A TZORNEY.

A. L. BAUSMAN. GRINDING MAGHINE. APPLIOATION FILED JULY 21,1910.

Patented Nov. 25, 1913.

3 SKEETS-BHEET Z.

INVENTOR. .M

BY R A TTORNEY.

WITNESSES'E Q W I #a/ WAM ALL. BAUSMAN. GRINDING MACHINE. APPLIUATIONFILED JULY 21, 1910.

1,079,465. Patented Nov. 25, 1913.

a SHEETS-SHEET a.

[NVEN TOR.

[Z l k) W Z ATTORNEY.

BY I

A LON ZO LINTON ZB-AUSMAN, OF GHI COPEE, MASSACHUSETTS.

GRINDING-Macrame.

To all whom it may concern:

Be it known that I, ALONZO Lm'ron BAUS- MAN, a citizen of the UnitedStatesof America, residing at Chicopee, in the county of Hampden andState of Massachusetts, have invented new and useful Improvements in-Grinding-Machines, of which the following is a specification.

This invention relates to improvements in grinding mills and isarticularly adapted ng cocoa beans. The object of the invention is invidin means for rapidly and thoroughly grinding or disintegrating thecocoa bean so that the particles will be of uniform size and yet at thesame time prevent the cocoa but-v ter from being separated from thesolid matter of the bean.

The invention consists broadly in providing a disk or bur element, theopposite sides of which are roughened and so mounted as to rotatebetweenbppositely disposed fixed disks or burs and with means forfeeding the bean simultaneously to the opposite sides of the grinding'disk, as described and claimed.

A further obj-ectof the invention consists in providing a gate elementwhich will e'rmit the beans to be forced or pushed into the grindingspace between the disks and at the same time prevent the pressure, dueto the grinding operation,

from forcing the beans back into the receptacle or hopper.

A further object of the invention is to provide means for accuratelyspacing the fixed grinding disks or burs from the rotatable bur, whichconsists preferably of a spacing adjustment and spacing sleeves.

In the drawings forming part of this a plication,Figure 1 is a vertical,longitud inal, sectional view on the line11-1 of Fig. 2 showing themanner in which the fixed rinding disks are adjusted towards and fromthe rotatable disk; also indicating the gate construction which permitsthe beans to be forced intothe grinding space and at the same timeprevent their escape from this space. Fig. 2' is a plan view of themachine showing the means by which the main shaft.

is rotated, also the hoppers for receiving the material to be ground,and a top view of one of the micrometer adjustments. Fig.

3 is a transverse sectionahviewon the. line 3-3, Fig. 1, showing theworm construction, the hopper, and'the shaft in cross section. Fig, 4 isa sectional plan view onthe line of Fig. 1 showing the grooves throughSpecification of Letters Patent. Application filed July 21, 1910. SerialNo. 573,124.

pro-- beans forward but prevents Patented Nov. 25, 1913.

face and the drive-shaft in cross section.

6 is a detail sectional view on the line 6-6, Fig. 5 showing therelation of one of til el fixed and the movable grinding plate or is z.

Referring to the drawings, a designates the base portion of the machinethat is provided at its opposite ends with'shaft-supporting standards 6and c, the shaft being indicated at d. The driving-pulley is indicatedat e which operates the shaft f on which the meshes wit a large gear kthat is secured to the shaft d. On the opposite end of this shaft iskeyed the grinding disk or bur i by means 'of the key m. outer end ofthe shaft 03 by means of the threads m 'is a cylindrical element m,which 1s provided with spiral shaped grooves 1a..

This cylindrical element rotates in the opening of the head pieces ofthe machine. Located transversely to the axis of the shaft d is a shortshaft 0 and on this shaft is secured a worm gear which engages the siral groove or threa s n of the cylindrical e ement m. The wheel, orworm-gear p serves the purpose not only of-feeding the their return fromtherinding spaces between the fixed and rotata 1e grinding members.

inion g is secured. This pinion Secured to the 9 and 1' designategrinding plates that are provided with roughened surfaces and arelocated onopposite sides of the rotatable disk or plate 21. These latesare secured to the castin or cooling "c ambers e and t by means of t ebolts u.

'vdesignates the cored out portion of the chambers s and t into whichcooling water is permitted to pass by means of the pipes to and w, asshown in ig. 5. The members 8 and t have openings 8 and t (see Fig. 4-)which are provided with. grooves s and t and in which is located thecylindrical rotatable members m and m respectively.

In order to accurately adjust the cham- 'bers s and t from the rotatabledplate z,

whereby the grinding spaces 9 an a may bethe same, I provide boltmembers 3 threaded at one end, as shown at 4'; and 10- cated betweenthechambers s and t is a sleeve 5 that threads into anothersleeve 6.

-- These two threaded sleeves comprise a span- J'ing. element which,after being accurately adjusted, is placed" on the baits 3 and materialinto contact with the bur an clamped between the members 8 and t bymeans of the nuts 4.

The hoppers for receiving the cocoa beans which are to be ground areshown at 9 and 10 and are provided with a sliding gate 11 past which thebeans flow to an opening 12 in the cooling chambers s and 15. Theseopenings communicate with the grooves or channels it in the rotatablemembers m an m which are secured to the shaft d by means of the threadsm and key m Packing rings 14 and 15 are located at opposite ends of thecylindrical elements m andm and bolts16 are provided for adjusting thepacking rings 1 1 soas to provide a tight joint at the end of the part mand about the shaft d.

The operation of the grinding mill is as follows: Assuming the shaft dto be rotated and the hoppers 9 and 10 supplied vwith beans which falldownward through the opening 12 into the spiral shaped grooves n, of thecylindrical elements on and m, the rotation of these parts in'theopenings 8 and t of the chambers s and it causes the worm gear 79 to berotated by means of the grooves 01,, the effect of which is to feed thebeans forward in opposite directions through the openings 8 at thecenter of the fixed members q and 9" which openings communicafe with theopposite grinding sides of the rotatable member 6. The worm-gears pserve the double effect of feeding the beans.

forward and at the same time preventing their escape by the outwardpressure during the grinding operations. The spiral grooves 8 t in themembers .9 and t communicate with. the outlets s so that when thecylindrical members m and m are rotated their spiral grooves n willcause the beans to be moved or pushed forward into the grinding spacessurrounding the disk '5 above the shaft d.

-Fig. 1 shows the material after being ground escaping into thereceptacle 16 from the opposite sides of the disk 'i.

In order to vary the fineness of the ground product, the operator, byadjusting the sleeves 5 and 6, can accurately adjust the spaces 3 and z.The roughened sides of the disk 11 are indicated by 20 and 21 and thatof the fixed disks at 22 and 23.

What I claim, is

1. In a grindin machine, the combination with a rotata le bur or platemember, a shaft for supporting said member, a sleeve prov ded withgrooves thereon which communicate with a hopper for receiving thematerial to be ground, a worm-gear operable from the grooved sleeve forforcing the for preventing its return movement during the grindingoperation.

the material to 2. In a grinding machine, the combination with theshaftthereof, a rotatable grinding disk, a pair of fixed grinding disksoppositely disposed to the first mentioned disk and having openingsthrough their centers, and means including a grooved sleeve andworm-gear driven from the shaft for simultaneously forcing the materialto be ground through the openings and into engagement with the saiddisks.

3. In a grinding machine, the combination with a rotatable shaft, a pairof grooved cylindrical members carried thereby and secured thereto, aworm-gear engaging said grooves, a rotatable grinding disk carried bythe shaft for effecting the grinding, fixed grinding disks oppositelydisposed to the grinding disk, said ears being designed to force mentwith the rotatable grinding disk, and means for axially adjustinv theposition of the said fixed disks whereby the spaces on the oppositesides of the grinding disk are adjusted.

4. A grinding machine of the class described comprising a pair of fixedgrinding members, a rotatable grinding member located therebetween,means, including a toothed wheel and a rotatable feed member, forforcing the material to be ground into the grinding spaces on theopposite sides of the grinding members, and or preventing its escape.

5. A grinding machine comprising a pair of coacting members, a rotatablebur member therebetween, a shaft, the fixed members having spiralgrooves leading to the rotatable' bur member, cylindrical members havingspiral grooves secured to the shaft, a toothed feed wheel operable fromthe grooved cylindrical members for forcing be ground toward therotatable bur member, and means for adjusting the fixed members towardand from the rotatable bur member, as described.

6. A grinding machine comprising in combination a rotatable shaft, agrinding member mountedthereon, two fixed grinding members between whichthe first mentioned grinding member rotates, said fixed members havingholes through which the material to be ground is fed to the grindinmembers, sleeves mounted on said shaft an extending through said holesto feed the material, and members cooperating with said sleeves toprevent the material from being forced back when once fed to saidgrinding members.

ALONZO Lm'rou BAUSMAN.

Witnesses:

K. I. OLEMONS, I-IARRr W; BOWEN.

the material into engage-

